Calking-tool



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:L7 jg ATTORNEYS L. PAULERO. CALKING TOOL. APPLICATION man JuLv n, i918.

Patented N ov. 9, 1920.

2 SHEETS-SHEET 2.

`UNITED sTATEs PATENT oFFicE. y

LOUIS PAULERO, 0F PETERSBURG, VIRGINIA, ASSIG-NOR TO AMERICAN ELECTRICTOOL COMPANY, INCORPORATED, OF PETERSBURG, VIRGINIA, A CORPORATION OFVIRGINIA.

GALKING-TOOI.

Specivcation of Letters Patent.

Patented Nov. 9, 1920.

To all whom t may concern.:

Be it known that I, Lonis PAULEeo, a citi- Zen of the United States, anda resident of Petersburg, in the county of Dinwiddie and State ofVirginia, have invented'` certain new and useful Improvements in Calleing-Tools, of which the following is a speciiication.

My invention relates to improvements in calking tools, and it consistsin the construc tions, combinations and arrangements herein describedand claimed.

`An object of my invention is to provide a tool for calking seams andmore particularly the seams of` wooden vessels, wherein the oakum orother calking `material is mechanically manipulated to form a loop ortuck in the oalrum strand precisely as is done when the oalriim ismanually introduced beneath the calking iron.

Another object of the invention is to Aprovide a callring tool having apositively operated tucling mechanism which isso ad justed as to renderit sensitive to varying seam widths, consequently forming tucks ofcorresponding` sizes, precisely as is done by the finger of the handwhen the oakum strandand the seam are under manual observation. Y

further cbj ect of the invention is to provide a callring tool whereinthe-oakum strand Y is automatically fed and the tuck is automaticallyformed, by a direct and positive mechanical action from the callringiron.

A. further object of the invention is to provide a novel resilientysupportior the hammer support and the calkingiron.

Other objects and advantages `will appear in the followingspecification, referencebeing had to the accompanying drawings, inwhich: 4 f ,3

Figure 1 is` a .vertical section ofthe im- Fig. 2 is a detailV frontelevation-of the calking tool showing the tucker arms Vand side oakumfeeder, 1 i

Fig. 3 is a diagrammatic sectionalview showing the 'formed tuck about tobe driven into the seam, p y Fig. i is an inverted plan view of thetuching blade,

Fig. 5 is a side elevation showing the side oalnim feeder,

' Fig. 6 isa diagrammatic sectional view illustrating therformation `ofa relatively large tuck for a wideseam, l

Fig. is a diagrammatic sectional view illustrating the formation of arelatively small tuck for a narrow seam,

Fig. 8 is a cross section of the rea-i' axle of the calking toolcarriage, and

Fig. 9 is a vertical section" tion ci' the calking tool. v-

The subject matter of the present invention is an improvement over mycopending applications for callring tools #-1 and #2, respectively iiledon January 16, 1918, Serial No. 212,127, and Mayi, 1918, Serial No.232,925. The novelty in the present invention lies more particularly inthe peculiar tucking mechanism. It has been demon,-

of a niodiiicastrated in actual practice,that a long period of trainingis required vbefore a `man can skilfully form the tuck in an oakumstrand so as to accommodate the varying widths ,of

vseams along the side of a vessel.

Obviously it requires a iractised eye, as well as linger, to loop thestrand over far enough to form a tuck of the requiredsize, so that whenit is driven into the seam the scam will be filled even with the topthroughout the length thereof. It is to replace this human element andto replace` the uncertainty of the ability ofthe operator even after along period of training,` with a device of precision which at `the sametime operates rapidly. i Referring then to the appended drawings, itwill be observed that the tucking blade 1 moves in the arc ofA a circlebeneath `the feederV 2 through whicht'he oakum Qdsfed in a continuousstrand to the calling iron 3.

The tucking` blade 1 has a resilient or ieldino mounting on the bridged4which D 2D L.

connects the tucker arms `5 at, the bottom. The tuckerk arms arepivotally mounted on the pivots 6 which are screwed into the` sides ofthe main frame T. The constructionof the pivotal mounting isshown inFig.` 5. Here it will be observedthat the pivotscrews 6 have anintermediate bearing portion of a diameter larger than the threaded endVand smaller than the portion adjacent to the heads upon which the tuckersprings 8 are coiled. This arrangement of the pivot the tucking blade 1under the influence of the springs 8 which are so connected to thetucker arms as to normally retract the tuck# ing blade from the channel1G in which the calking iron 3 operates. A square slide block 11occupies the channel 10 and has tucking pins 12 which operate in theopening 13 of `eachfof the bifurcated heads 14 of the tucker arms,-during a portion of the stroke of the calking iron. In this connectionit will be observed in Fig. 3, that the calking iron is made a part ofthe slide block 11. Obviously if it be so desired, these adi jacentparts may be made separate if practice indicates such to be practicable.Y

The `action of forming the tuck Tin Fig. 3 is automatically andmechanically performed through the'operation of the calking iron 3 on aportionof the return stroke thereof. Fig. 3 just referred to, shows thetucker arms 5 still against the stops 9, and the tucking blade 1retracted from the channel 10 under the influence of the springs 8.llVhen the upward stroke of thek calking iron. is nearly completed, thetucking pins 12 will enter the openings 13 between the upper and lowerlips 15 and 16 of the head 14, and drive the tucking blade across thechanfnel 10i-to form the tuck. `Fig. 3 shows the tuck ashaving beenformed, the tucking 18 on abutment screws 19.`

blade 1 retracted from the channel, andthe calking iron 3 in the act ofdriving the tuck T into Vthe seam S between two planks of a woodenvessel.

Y Fig. 2 shows the tucking blade 1 in the inner extremity of itsmovement described j in connection with Fig. 3. Fig. 1 shows the .sameposition and .also illustrates how`the tuck T is initially formed.- Whenthe pins l2leave the openings 13 on the down stroke ofthecalkingrir'on', the springs 8 force the tucking blade l1 out of the pathof the calkingiron, and the tucker arms 5 into contact with the stops 9.This action is falso as,- sisted' initially by the movement of thetucking pins over the lower lip 16.

The tucking blade 1 @has a transverse Hangs 17 at the back, whichnormally rests against the bridge 4f by virtue of the springs j Thetucking blade 1 is held in place on the bottom of the bridge 4 1: bymeans of holding screws 2O lwhich enter slotsv 21 in the tucking blade.

The screws are so adjusted as t0 hold'the Yiso that the sliding functionof the tucking blade can'be performed.

In this connection attention is directed to Figs. 6 and 7, of which Fig. 7 illustrates the circumstances under which the sliding function ofthe tucking bladeoccurs. The tucking blade in Fig. 6 is adjusted to movea distance equalto the width of the channel 10. This distance isapproximately threequarters of an inch. This throw of the tucking bladeforms a tuck T of just .about the right size to properly fill anordinary and relativelywide seam S. It has been found in actualpracticein the use ofthis calking tool, that the tension of the oakum strandbetween the inner `edge of the feeder 2 and the nearest edge of the seamS, is considerably greater when the seam is relatively narrow.

rThe increased tension inthe oakum strand forms amore rigid abutment asit were, for the edge of the tucking blade, so that :instead ofpermitting the tucking blade to make a full stroke` across the channel10, the tucking action is retarded but is taken upV by the compressioncf the springs -13 on the butrpent screws 19 as clearly shown in Theaction just described has been found to work out in actual practiceV andefficiently ,takesy the place of the manual operations which nowcustomarilyV must bey followed to produce the same result. Thus it maybel said that the tucks. T are automatically formed of just therightsize te fill the seam Arclamp 27 at the top of the hammer sup.-

port 26` is adapted toV secure the calking tool on the end of amechanically operated hammer of either the type illustrated inmyco-pending application for a patent Von an electric hammer, filedDecember` 5, 1917, Serial No.v 205,503, or any other type. The spring'23 is strong enough to support the weight of` the hammer and. undernormal conditions,presses the shoulder of the cup l25V against theclosure cap 28 which is screwed into the threaded end of the casing 22.'I f A Screwed in the cap 28 is a pin 29 which enters the slot 30 in onesideV of the hammer supportv 26 and prevents it from 'turning Aplurality V'of holes 31 in the base of the 'slot 30 permit theadjustment of the stop 32.011 the hammer support. This stop is for thepurpose of gaging the depthrto which .the calking iron 3 may beforcedinto the yinto the region of any one of the holes.

The stein 34 which. carries the calking iron at the bottom, has areduced portion which slides in the bore ofthe hammer support V26. Apair ot nuts 35 are screwed on the threaded end of the stem 34 adjacenttothe reduced portion. These nuts. occupy the cup 25. The inner spring24 presses the nuts 35 against the base of the cup and serves to returnthe calking iron 3 after each stroke of the hammer on the end oi' thestem 34. In this connection it is to be ob served that the upper end ofthe stem is further reduced to fit in the chuck of the hammer. Y

1Wheels 36 and 37 at the front and rear of the main frame 7 of thecalking` tool, form a part of the carriage illustrated in Fig. 5. Thefront wheels have an integral tracking wheel 88. A tracking wheel 39 isseparately mounted over a bushing on the axle 40 'at the rear of thecarriage. Similarly, the wheels 37 are mounted on bushings on the sameaxle. The frontend rear tracking wheels keep the calkingrtool inalinement with the seam so that the calking iron 3k always strikes inthe center.,

T he operation.

oakum strand is readily cut or broken. Thisv necessitates the stoppingof the work and the re-threading of the oakum into the machine. As hasalready been fully explained7 the device herein described accomplishesthe same result as is accomplished manually.

It is thought unnecessary to repeat in detail, the manner in which thetuck T is formed. It is thought sufficient to say that the springs 18 onthe abutment screws 19 render the tuckingblade 1 sensitive to thevarying widths of the seam S, so that the throw of the tucking blade isgaged` each 'me by the width of the seam which is then worked upon. Whenthe seam is narrow as shown in Fig. 7,the tension of the oakum strandbetween the adjacent edges of the seam and the feeder 2, is greater thanwhen the seam is wide as in Fig. 6, with the result that more resistanceto the movement of the calking blade occurs. This increased resistanceis taken up in the springs 18.

The modiication in Fig. 9 shows a slightly diii'erent arrangement of thecalking tool. The stem 34 has `a reduced and threaded end at the topby'means of which the stem can be screwed directly into the piston 41 ofthe mechanical hammer. Of course the stem may be connected to the pistonby any other suitable means which actual practice may suggest. Thehammer support 26 also slides within the casing 22, but instead of twosprings inside of the casing, only the supporting spring 23 appears.

T hespring 24 abuts a member 35 which VVisthe equivalent of the nuts 25in Fig. 1.

The spring 24 exerts sufficient upward pressure against the butfer' towithstand the blows of the piston 41. The remaining structure of themodification is substantially like the structure in Fig. 1 as will befound by a comparison of the reference characters.

The tucking mechanism is also of a slightly modified construction. Thetucker arms 5 terminate in lugs 42 beyond the pivots 6, and these lugscoperate with the tucking pins 12 similarly as the pins 12 coperate withthe heads 14 in Fig. 2. therwise, the construction and operation of thetucking mechanism in Fig. 9, is the same as that in the prei'erred formof the invention.

I claim: I

1. A calking tool, comprising a calking iron for driving oakum into aseam, and means positively actuated by the, engagement of a portion ofthe calking iron with a part of said means during a portion of thestroke of the calking iron, for automatically forming a tuck beneathsaid iron crosswise of the seam.

2. In a calking tool, a calking iron ior driving oakum into a seam,means positively actuated by the contact of a portion of the calkingiron with a part of said means during a portion of the stroke of thecalking iron, for automatically beneathsaid iron,"and means forperiodically retracting said tuck-forming means from the path ofthecalking iron.

3. A calking tool, comprising a calking iron for driving oakum into aseam,` a tucker including a blade., positively actuated throughicontacttherewith by a portion of the calking iron during a portion ot thereturn stroke ot the iron, thereby thrusting the 'blade beneath the ironand automatically forming a tuck in the oakum strand across the seam .1and means coperating with. the

tuckerblade for automatically regulating the size of the tuck inaccordance with the Y varying widths ofthe seam.

4. In a calking tool, acalking iron'ior driving 'oakum intoa seam, meanspivoted adjacent to the calking iron and movable across the ends ot thecalking iron to form a tuck in a strand of oakum, means` embodied insaid tuck-forming means having a yielding action sensitive to variousdevrees of tension insaid strand caused by arying widths of VJthe seam,.thereby form ing tucks of various sizes, and means extend forming. atuck ing from the tuck-forming means into the path of a portion of thecalking iron,arranged to be engaged during a portion of the returnstroke of the iron to actuate said tuck-forming means.

5. In a calking tool, a calking iron for driving oakum into a seam,means pivoted adjacent to the calking iron and movable across the end ofthe calking iron to form a tuck in a strand of oakum, means embodied insaid tuck-forming means having a yielding action sensitive to variousdegrees of tension in said strand caused by varying widths ofthe seam,thereby forming tucks of various sizes, means extending from thetuck-forming means into the path of a portion of the calking iron,arranged to be engaged during a portion of the return stroke of the ironto actuate said tuck-form- Y ing means, and resilient means for holdingsaid tuck-forming means outv of the path o'f the calking iron duringthecalking stroke 'and during the period of disengagement between saidextending means' and the cooperating portion of the calking iron.

6. In acalking tool, a calking i'ron yfor ydriving oakum into a seam,tuck-forming means cooperating with the iron and positively actuatedthereby, resilient means for holding the tuck-forming means in aretracted position, and stops for limiting the influence of saidresilient means and lenabling the independent holding of said tuckforming means during the operation of driving the calking iron into adeep seam.

1 "7?. A calking tool, comprising a wheeled mainframe, a calkingironreciprocatively mounted thereinfor driving .oakum into a seam, atuck-forming mechanism for forming a tuck in a strand of oakum beneaththe calking iron after each return vstroke of said iron, mounted andoperating laterally of the main frame, and a laterally disposed oakumfeeder above said tuck-forming mechanism.

8. A calking too'l, comprising means for formingtucks of a size toaccord with varying seam widths, consisting of a calking iron, pivotallymounted tucker arms including a bridge, an engageable y.portion beyondthe pivots, tucking VVpins on-the calking Airon for engaging saidportions to drive saidarms inwardly, a tucking blade with a flange,means providing a limited movement of the tucking blade on the bridge,an oakum feeder, and abutments with interposed resilient means coastingwith the tucking blade flange and-enabling a retrograde movement of thetucking blade onY the bridge, to.v compensate for an increase inresistancerinan oakum strand of increased tension, between the callringironv occupying the channel and provided with a non-circular slideblock, tuckcasing and limit the downward thrust of the hammer supportthroughv pressure on the ing pins carried by the slide block, apivotally mounted tuck-forming-mechanism actuated by said tucking pinson the Vreturn stroke and operating beneath the calki'ng iron, aresilient stem support inthe casing 40 for returning the calking iron tothe normal position, a hammer support. adapted to be clamped to amechanical hammer for securing the calking tool to said hammer, a cupincluded in said hammer support occupying a position in said casing, anabutment carried by the stem andl occupying the cup, and a resilientsupport contacting the cup and upholding the hammer support.

l0.' A calkingtool, comprising a main frame and arcasing, a hammersupport telescopically mounted in the casing, resilient means concealedin the casing andholding the hammer support up, means included in thehammer supportY for'attaching the calking tool toa mechanicalhammer toconstitute the `calking tool as an attachment thereto, and stoppingmeans on the hammer support, arrangedto engage the top of the hammer.` 1v f j ll. In a calking tool, a main frame having a channel and a casing,a stemhaving a calking ironoccupying the channel and provided With thenon-circular slide block, tucking pins carried by the slide block, apivotally mounted tuck-forming mechanism actuated by said tuckingf pins.on Vthe return stroke and operating beneath the calking iron, a ham-mersupport including an abutment member occupying the casing, a resilientsupport therefor, an abutment member carried by the stem and occupying aposition in a portion of the hammer support, and a resilient supportbetween said abutment member and the abutment member in said casing.

l2. A calking tool, comprising a main frame and a casing, a hammersupport telescopically mounted in the casing,resilient means concealedin the casing and holding the hammer support up, means included inVarranged to engage the top of the casing and limit the downward thrustofl the hammer support lthrough pressure on the hammer, aoalkingironhaving a stein extending through the casing and hammersupport to the ham- Vmer, and means providing a resilient support forthe stem to act as a resilient support for the stem to absorb-the shocksof the, blows of the hammer.

18. A calking tool, comprising a calking iron for driving oakum into aseam, means positively vactuated by the contact of the Y portion oftheYcalking iron with a part of amaai/26 said means during a portion of thestroke of the calking iron for automatically forming a tuck beneath saidiron, and means for automatically withdrawing said tuck-forming meansout of the path of the callring iron when said positive actuatingcontact is severed.

141-. Instrumentalities embodied in a calll ing tool for automaticallyforming tucks 1n a strand of calking material across a seam ofincreasing or diminishing sizes to correspond to the increase anddecrease in the Width oi' the seam; comprising a calking iron; and aswinging tucker, comprising a portion 'engageable by a part of thecalking iron near the end of the return stroke to swing the tucker, anda tuck-making portion arranged to yield on engaging the calking materialWhen it is under tension; as in calking a narrow seam and not to yieldon engaging the calking material when itis loose as in calking a Wideseam.

15. A swinging tucker for a calking tool,

comprising a tuck-forming blade mounted on a tuclrer; and resilientmeans forming a part of said mounting, enabling the blade to yield andrecede When presented a stili oakum strand thus forming a small tuck,and holding the blade immovable on the tuclrer when presented to a looseoakum strand thus forming a large tuck.

16. In a calking tool, the combination of a frame providedivith means toguide calking material to a seam, a reciprocative tucking blade Jforforming tucks in said material, means for supporting and guiding saidblade to cause a bodily edgetvise movement thereof, and means operativeto reciprocate said blade.

17. In a calking tool, the combination of a frame provided with means toguide calking material to a seam, a reciprocative calking element Jfordriving said material into a seam, a reciprocative tucking blade forforming tucks in said material, means for supporting and guiding saidblade to cause a bodily edgeivise movement thereof, and means controlled-by said element during the operation thereof for reciprocating saidblade.

18. In a calking tool, the combination of a frame provided with means toguide calliing material to a seam, a pivoted reciprocative member, atucking blade carried vby said member and moved edgeivise thereby whensaid member is moved for forming tucks in said material, and meansoperative to reciprocate said member.

19. In a calking tool, the combination of a frame provided With means toguide calking material to a seam, a reciprocative calking element fordriving said material into a seam, a pivoted reciprocative member, asucking blade carried by said member and moved edgevvise thereby whensaid member is moved for Jforming tucks in said material,A and meanscontrolled by said element durJv ing the operation thereof forreciprocating said member.

20. In a callring tool, the combination of a frame provided with meansto guide calking material to a seam, a reciprocative member, a yieldingtucking blade carried by said member for forming tucks in said material,and means operative to reciprocate 'said member, said blade beingadapted to yield relatively to said member under a predeterminedpressure against said material durin p the tucking operation.

21. n a calking tool, the combination of a frame provided With means toguide calking material to a seam, a reciprocative calking element fordriving said material into a seam, a reciprocative member, a yieldingtucking blade ca rried by said member for forming tucks in saidmaterial, and means controlled by said element during the operationthereof for reciprocating said member, said blade being adapted to yieldrelatively to said member under a predetermined pressure against saidmaterial during the tucking operation.

22. In a calking tool, the combination of a frame provided with means toguide calking material to a seam, a movable tucKing device having ayielding part adapted to tucking operation.

LOUIS PAULERO.

